#121758#121758

#121758 is a dark, moderate blue. Relative luminance 0.014; OKLCH L 25.3% C 0.115 H 271.6°. Best body text is #FFFFFF at 16.29:1 contrast (WCAG AA passes).

Color values

HEX	#121758
RGB	rgb(18, 23, 88)
HSL	hsl(236, 66%, 21%)
HSV	hsv(236, 80%, 35%)
CMYK	cmyk(79.5%, 73.9%, 0%, 65.5%)
CIE-LAB	lab(12.26, 23.17, -39.63)
CIE-LCH	lch(12.26, 45.91, 300.31°)
OKLab	oklab(25.31% 0.0032 -0.1146)
OKLCH	oklch(25.31% 0.115 271.6)
XYZ	xyz(2.3167, 1.4457, 9.3876)
Luminance	0.0145 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#121758 #585312

analogous

#123A58 #121758 #301258

triadic

#121758 #581217 #175812

tetradic

#121758 #58123A #585312 #125830

square

#121758 #58123A #585312 #125830

split-complementary

#121758 #583012 #3A5812

monochromatic

#050719 #080A25 #121758 #1C248B #2732BE

Accessibility & contrast

On white

16.29

#121758 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.29

#121758 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #121758

16.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##121758	#FFFFFF	#000000	##FFFFFF
##121758	1.00	16.29	1.29	16.29
#FFFFFF	16.29	1.00	21.00	1.00
#000000	1.29	21.00	1.00	21.00
##FFFFFF	16.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00235A

Deuteranopia (green-blind)

#001D57

Tritanopia (blue-blind)

#002935

Achromatopsia (no color)

#202020

Design tokens & code

CSS

--color: #121758;
/* rgb */ color: rgb(18, 23, 88);
/* oklch */ color: oklch(25.3% 0.115 271.6);

Tailwind

colors: {
  custom: {
    50: '#5d5488',
    500: '#121758',
    950: '#000000',
  },
}

SCSS

$custom: #121758;
$custom-light: #5d5488;
$custom-dark: #000000;

JSON

{
  "hex": "#121758",
  "rgb": {
    "r": 18,
    "g": 23,
    "b": 88
  },
  "hsl": {
    "h": 235.714,
    "s": 66.038,
    "l": 20.784
  },
  "oklch": {
    "l": 0.25311,
    "c": 0.11469,
    "h": 271.6
  },
  "luminance": 0.01446
}

Semantic roles & 50–950 ramp

primary

#121758

secondary

#918A35

accent

#DD3FE9

background

#F5F4F8

surface

#E9E7F0

border

#C5C3CB

text

#05020B

muted

#79787C

Preview Lab

Preview with #121758

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →